Histograms & Scatter Plots

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data. It shows how many data points fall within specified ranges (bins).

Front

What is a scatter plot?

Back

A scatter plot is a graph that displays values for typically two variables for a set of data. Each point represents an observation, showing the relationship between the two variables.

Front

What does 'positive correlation' mean?

Back

Positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What does 'negative correlation' mean?

Back

Negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What does 'no correlation' mean?

Back

No correlation means there is no predictable relationship between the two variables; changes in one do not affect the other.

Front

How do you determine the interval with the greatest frequency in a histogram?

Back

You look for the tallest bar in the histogram, which represents the interval with the highest number of data points.

Front

What is the purpose of a scatter plot?

Back

The purpose of a scatter plot is to visually display the relationship between two quantitative variables and to identify any patterns or correlations.

Front

What does it mean if a scatter plot has no association?

Back

If a scatter plot has no association, it means the points are scattered randomly, showing no predictable pattern.

Front

How can you interpret a scatter plot?

Back

You can interpret a scatter plot by looking for trends, clusters, or outliers in the data points to understand the relationship between the variables.

Front

What is the x-axis in a scatter plot?

Back

The x-axis is the horizontal axis that typically represents the independent variable.